4. Phenol reacts with methyl chloroformate in the presence of naoh. Here why doesn't electrophilic aromatic substitution take place like that in Reimer teimann reaction?

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Riemer Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substituted salicylaldehydes as depicted below

The electrophile in this reaction is

Q. Phenol reacts with methyl chloroformate in the presence of

N a O H

to form product A. A reacts with

B r_{2}

to form product B. A and B respectively are:

Q. Electrophilic substitution reaction in phenol take place at :

The electrophile involved in Reimer-Tiemann reaction is:

Number of compounds which are more reactive than phenol towards electrophilic aromatic substitution reaction is:

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